Now that the sign reads, “No person ______ smoke here”, please choose a seat in the smoking area over there if you _______ smoke.
The young couple, who returned my lost wallet, left _______ I could ask for their names.
We would rather our daughter ________ at home with us, but it is her choice, and she is not a child any longer.
During his stay in Xi'an, Jerry tried almost all the local foods his friends,
I’d appreciate ________ if you could let me know in advance whether or not you will come.
the difficult maths problem, I have consulted Professor Russell several times.